[Geofram]

Simple and short: Putting together a computer, looking at high end audio.
Is the HT Omega Claro Halo and a set of A900's overkill for gaming, music, and movies?
What options does a user have that are lower budget than this without sacrificing that "epic" feeling even after I get used to the head fi sound.
 
the headset doesn't need to rumble, but bass shouldn't be non-existent.

 

[Mad Max]

Nah, that shouldn't be overkill.
I'd recommend the Fostex T50rp over AT's if you do not mind modding the Fostex.
The Audio-Technica's soundstage cannot compare to T50 once you have dampened the drivers and opened the vents covered by felt in the cups, but you sacrifice a bit of isolation.

 

[Geofram]

What are my best options in a budget around $300? This would have to include any sound card, amp, and cans unless onboard is used.